Shimano Front Chainwheel Set FC-M311 Triple 175mm Crank Arms 48/38/28T Ratio

Crank Length : 175mm for optimal pedaling efficiency. Shimano Chainset. Triple Chainrings : 48/38/28T ratio, providing versatile gear options for varied terrain. This chainset fitseither a 122.5mm or 123mm JIS square taper bottom bracket axle.

eBay